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Just curious why folk are using gas with octane ratings higher than 87? This is lne of the selling points on the new 4runner.

If you are using 89, 91 or 93, please share why and what differences you are seeing?
I'm trying 91 just to see if it will help get better than the miserable 14.5 mpg I'm getting (Normal mode, 650 miles, standard tires, moderate driver, 60/40 Hwy/City).
 

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Dropping another quick update for everyone. Consistently getting an average of around 21-22 mpg with mixed driving between socal traffic ridden highways and the hilly Laguna area.

Drove down to San Diego today at a brisk pace between 75-85 mph and got nearly the 25 mpg value. Extremely impressed with the efficiency of this new powertrain.
IMG_1601.jpeg
Well that's interesting. Your SR5 shows "Trip Average" MPG, my ORP doesn't. I thought it was strange, why would they remove that on higher trims? Also, very jealous of your mileage. I'm in San Diego getting 14.5 MPG.
 

drNick

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Mine is TRD ORP. 15 Mpg city driving, the way one is supposed to drive a car. 87 octane gas.
 

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I am using Fuelly to track it, but for some reason I can't find info on the 6th gen yet. Maybe not enough people have input data yet? https://www.fuelly.com/car/toyota/4runner
Hi Hayden. I'm not sure if you're having trouble adding your vehicle or viewing results so I'll add a few screenshots. There may be a better way but this is what I got; It's not the most intuitive.
2025 4runner 6th gen Real World MPG by Owners (gas non-hybrid 4Runner) - Post Yours ⛽️ Fuelly Adding 4Runner 1

Adding

2025 4runner 6th gen Real World MPG by Owners (gas non-hybrid 4Runner) - Post Yours ⛽️ Fuelly Adding 4Runner 2

Viewing others. This is from your link.

2025 4runner 6th gen Real World MPG by Owners (gas non-hybrid 4Runner) - Post Yours ⛽️ Fuelly Adding 4Runner 3

Select the Submodel and apply filter. I wish you could select 4X4 or multi-select Submodel and exclude 2WD leave out 2WD.

2025 4runner 6th gen Real World MPG by Owners (gas non-hybrid 4Runner) - Post Yours ⛽️ Fuelly Adding 4Runner 4

And now it just shows your vehicle.
I hope this helps.
 

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How's everyone's MPG stats looking lately?
Terrible, thank you for asking.
I’m getting 14.5 MPG. Here are the details:
Vehicle: 2025 4Runner Off-Road Premium
Engine: i-Force 2.4L Turbo non-hybrid
Drivetrain: Part Time 4WD
Driving Mode: Standard
Tires: 18” TRD Black Wheels with Falken Wild Peak A/T 265/70R18 116T tires
Tire Pressure: 33 cold (It started at 35 but at 641 miles dealer set to 33).
Driving Style: I think I’m moderate
Highway Speeds: 65 to 75 MPH
City/Highway Split: 40% City/60% Hwy ish
A/C: On most of the time. Not even sure how to turn it off.
Traffic Type: No stop and go. Mostly suburban/non-rush hour
Gas Brand: Costco “TOP TIER Detergent Gasoline”
Gas Octane: Regular 87 first two fills. Premium 91 since.
Gas Ethanol: Pump says “Contains Up to 10% Ethanol”. Southern California.
Miles at Last Fill: 656

Here’s my car on Fuelly compared to other 2025 Off-Road Premiums using fuelly.com. My mileage is so bad that I am literally off the chart:
2025 4runner 6th gen Real World MPG by Owners (gas non-hybrid 4Runner) - Post Yours ⛽️ Fuelly MPG

Are people really getting 20+? I’m getting 14.5 mpg with 60% highway in normal mode. I’m looking around and seeing posts where others are getting 20 or so combined, even with fewer miles total than me. I don’t think I’m lead footing it. Some people mention a break-in period but I see people with 22 MPG with less miles than me. Will it really get me 8 MPG? I wish I could trade with someone getting 19 to 22 to see if it is really my driving that is so bad that I get 30% less.
 

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23.2 mpg. mixed driving in socal. Am light on throttle and use eco. Stock everything.
 

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15 MPG. 100% City driving. Quite a bit of idling.
 

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im on sport mode 75% of the time, mix driving and im getting around 18.5 average.
 

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This is an off road vehicle. It’s not designed for good gas mileage. Toyota sells other vehicles if that’s super important. I have a gr86 and even though it takes 91 octane I can’t fit more that 10 gallons in it. Get the 4 runner for what it is. You might be disappointed if you put your hopes in it or if you put 35’s that each tire weighs 75 lbs just for a C rated.
 

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I'm trying 91 just to see if it will help get better than the miserable 14.5 mpg I'm getting (Normal mode, 650 miles, standard tires, moderate driver, 60/40 Hwy/City).

14.5 ??? thats horrible.

I have a 32 mile one way commute and generally keep it in Eco mode and use cruise control often, last I checked I was getting 20.7.

Lately I've been using sport mode though so I'll reset the mpg readout and see what I am getting.

I am using Exxon premium (91 or 93 octane).

Frankly I am shocked at the low MPG these things are getting. On my 5th gen I was averaging about 24-35 mpg according to the gauge. I am surprised that Toyota made the 6th gen have poorer mpg ratings.
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